Cremona's table of elliptic curves

987 = 3 · 7 · 47

Field	Data	Notes
Atkin-Lehner	3+ 7+ 47-	Signs for the Atkin-Lehner involutions
Class	987a	Isogeny class
Conductor	987	Conductor
∏ cp	4	Product of Tamagawa factors cp
Δ	1252503 = 34 · 7 · 472	Discriminant
Eigenvalues	1 3+  4 7+  2  0  6 -4	Hecke eigenvalues for primes up to 20
Equation	[1,1,0,-28,-35]	[a1,a2,a3,a4,a6]
j	2565726409/1252503	j-invariant
L	2.1704014658646	L(r)(E,1)/r!
Ω	2.1704014658646	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	15792bi2 63168bh2 2961f2 24675r2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 987a2

a2	a3	a5	a7	a11	a13	a17	a19	a23	a29	a31	a37	a41	a43	a47	a53	a59	a61	a67	a71	a73	a79	a83	a89	a97
1	+	4	+	2	0	6	-4	6	6	-4	-10	0	6	-	10	12	10	-14	-8	-4	-8	12	18	-14

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Quadratic twists for elliptic curve 987a2

-4	8	-3	5	-7	-11	-47
15792bi2	63168bh2	2961f2	24675r2	6909h2	119427b2	46389a2

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Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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